Closure fastener



Jan 6, 1931.

J. K. HARFORD CLOSURE FASTBNER Filed July 8. 1929 I (/OHN H/IRFORDInvenlor JMZ W A llorney Patented Jan. 6, 1931 1 UNITED STATES,

JOHN x. mnronn, or nnwrsron, IDAHO I PATENT O F CE cnosrmn rnsmimmApplication filed July 8, 1929 Serial no.=a7s,e1o.

My present invention relates to an improved closure fastener which,while adapted for use in various ways is particularly designed for usewith the caps of radiators of automotive vehicles, gasoline tanks, &c. 7The closure is of that type utilizing a key and lock device with rotaryspindles or fastening der vices that co-act with a stationary part or Ihave illustrated one complete example of the physical'embodiment of myinvention where in the parts are combined and arranged in accord withthe best mode I haveso far devised for the practical appllcation of theprinciples of my invention.

Figurel 1s a perspectlve new of the device,

showing the key in operative position. F ig-' ure 2 is a'view partly inelevation and partly in vertical section, as at line 2-2 of Figure 3.Figure-3 is a View partly in elevation and partly in section as at line33 of Figure 2, with one of the duplex fasteners released and the otherfastener locked. t Figure 4 is a sectional view as at line H of Figure3.

In order that the general arrangement, utility of the device, andrelation of parts may readily be understood I have indlcated by thenumeral 1 a portion of a tank or other receptacle that is to be closedafter filling, and the tank is provided with a nipple 2 that isfashioned with a horizontal, interior, an-

nular flange 3.

The filling nipple is normally closed by-the use of a cap 4 ofcylindrical shape to fit over the nipple, and an annular ring or gasket5, interposed between the flange 3 and the cap, provides a leak-proofjoint between the n1p-V ple of the tank and the cap or closure.

The cap is fashioned with an upwardly projecting lock-head 6 having acentral keypawls from locked position.

hole 7for the flat key 8, and the key is designedto co-operate with apair of pawls 9 and 10 that are spaced at different levels and movableinlateral recesses or sockets 11. By turning the key in one direction thetwo pawls 5 5 areturned to locked position and a'turn' on' the key inthe opposite direction releases the Thelocking pawls are designed to co-act =with a pair of duplex Vertically arranged,

parallel spindles 12 and 13 that are supported in the head at oppositesides of the rkey or the key-hol'e','andthese spindles arepermitted' tohave botha rotary motion and a vertically reciprocable motion in thehead. '65 Ontheir upper-ends, exterior of thelockhead, the spindlesiareprovided with knurled knobs 14 and between the knobs and the upper faceof the head are interposed springs 15 'coiled'about thelspindles.:The'springs nor mally bend to lift and hold the spindles in theiruppermost positions, but the spindles are depressible :against Y thetension of the springs when the cap is to beremoved after therkey 8istu'rned to release the pawls 9 7, 5

and 10.

fi-At theirylower ends .the spindles are provided with horizontallyextending latch-lugs or latchesl6 and 17, which are rigidly secured onthe spindles by means-of nuts 18 9 threaded on ends. lofith'espindlesbelow the latches. When the-closure is inlocked positionothese latchesextend outwardly from the spindles and engage against the underside of rthe annularflange. 3 or .thetop of the tank, as 86 showmand the springs15 tendtohold latches 16 and 17in frictional contact with flange 3, ortank-, asI in dotted lines Figure: 3; T When the closureis v unlocked-:or the cap removed fromrthe nipple, the latches are turned in- 99turned to withdraw these pawls fromcontact with the flat faces 19, itwill be apparent that the spindles may be depressed to full linepsition; in Figure 3, and turned inwardly, and s by means of anannulargroove 20 on each spindle that co-acts with a retaining lug 21,the spindle may-be held in depressed and fastened,position.vTheretainingllug is a'metal c. plate fastened to the lower inside faceofthe W lock head by screws 22 and the ends of the plate are used aslugs'for engaging -in-the groove. When the fiat face 19 of theispindleii s is turned to position opposite the 'lu-gjef course the latter has noconta ctthe sp in awndle and therefore the latter may he reciprQated-:--* i r, e

:;.-By.-turningtheuspindle;,.l3 in Figure 3 V .i rollgh an-iar ciof 180degrees, the flattened zfafce 1 9,is.:br0ught apposite :.t0 theretaining 12 :lllg. 21,: andfithe spring .15; is; then freeitosliftgthezjlatch }1.6, into; contact awithi flangei3 or; 1Sh0uldef23.ziliherfthekeyfi is turned;'tdpr.o-' ject the pawl .9.;,ag'ainst theflat face-l9 of ..-th.e-;Sni-ndle, therebyrpreventing rot'atinn of ,thespindle and depression of; the spindle .is

prieventediby the presence of theshoulder1'9 positioned just above thepawl 11'. j

. By this dilplex arrangementof the spindles .zthle cap rigidly.retained in position. on the nipple, but the, cap. mayreadily beunlocked -86 -what1l; claim a's'newiand desire .to securelby ,1:

ibfyvthe use of thekey and;then the capjis .un-.ifastenedandremoved'with facility whenre- -quilted. Z j M iHgaving thusfully describedmy invention, r i

@LettershPaten't isze a a i .1 1.. In a. closure device thecombinationwith 3 iaf 'lcap and its head, of a vrotatable and def 'pressible, spring-pressed spindle supported inthehead; acatch'rig id withthe spindle for A engagement with astationary member',-n1eans N 1 i f0r,locking the spindleagainst rotation when -i n'.closed' position; andI'neans foriretairiing the' spindle againstreciprocation when inopenposition v I2: The combinationwith a'cap and its lockhead anda lockinthe'he'ad5 of arotatahle', de- V pressible, spring pressed spindleihaving a ifastening catch at one end, said spindle hav- :ing'a flatface for co action withjthelock, and Y an annular groove, and a fixedretaining lug for co-action with the groove; Y 3.'.Thecombinationwithacapgits lockhead a andua-lock inithe'ihea dyof aretaining plate i I firming lugsin' the cap; a pair of spring pressed,*depressi ble' spindles having annular grooves for co-action with saidlugs; fasteningilatchesonsaid'spindles forco-action with a stationarymember, and fiatffaces on the spindles for c0-a cti0n with the lock asdescribed =1 In testimony'whereof I alfixmy' 'signature. "JOHNKL HARFQRD.

